If you would ask this question about 20 years ago I would give you a different answer than now.
20 years ago there were many unreliable casinos on the internet because there was no good license system and organisation to check. So there were many online casinos who were taking deposits from players and suddenly they disappeared.
Since 2015 everyhting becamse much safer with a good license systems in different countries and professional companies who are launching online casinos. Of course there are still casinos which are a bit difficult to trust but the chances are much lower than before.
Do I have to register to play at an online casino?
You can always play in fun mode without opening an account. But if you want to play for real money than you need to open an account, unless you choose for a Pay & Play Casino.
Online casinos need to know from who they receive the deposits and to who to payout if you win at the casino. When you deposit more than a certain amount or when you win money and request a withdrawal the casino wants to receive documents (ID, Utility Bill, etc.) from you. They want to compare your account details with the documents you send. That's why its very important to use the correct details when you open a new account because a casino might decide not to pay you if the details are not correct.
How fast do you get your winnings?
This depends a lot of the casino where you are playing and the payment method you choose. For ewallet accounts like Neteller and Skrill you might receive the winnings while you are waiting. Of course your details need to be verified and checked first.
With a bank transfer it can take up to 5 business days depending on your bank and where the transfer is coming from.
How long I need to wait to see my money after making my deposit?
With most payment methods you receive your deposit immediately after your deposit was successfully processed. When you don't receive your deposit in a few minutes then you need to contact the customer support because there should be a technical problem. This is a common situation where the servers between the casino and payment provider have a communication problem. Don't worry you money is not gone and the live chat support can easily find back your deposit and will add it to your account.
Can I play games for free?
Yes, at almost all online casino's you can try each game in free play mode, except live casino games. There you can only play the games with cash money otherwise the table will be full all the time with fun players and in the end a casino needs to earn money from real money players.
Most casinos have two buttons on the thumbnails where you can choose between playing for fun or for real money. When you are not logged in then you need to login first or open an account if you don't have one. For fun mode you don't need to have an account and you can start immediately.
Does the casino has a button to change the payout ratio?
No, an online casino can not control the outcome of the spin. This is all decided by the Random Number Generator which is set up by the game provider and not by the casino. A casino has no control over this so it's a big myth that people think that the casino clicked on a button when you have a big loosing streak.
What means the payout percentage (RTP) of a game?
Every game has their own payout percentage. This payout percentage means the percentage that returns money back to the player. That's why it's called RTP = Return To Player.
When a game has a payout percentage of 97% it means that for every 100 euro a player bet 97 euro will go back to him and 3 euro will go to the casino. This doesn't mean that when you bet 100 euro today you get 97 euro back. This is an average and counts for all players over a long period of time. So for a few millions bet the game returns 97% back to the player.
What is the welcome bonus?
There is a lot of competition between online casinos and to get new players a casino needs to offer something special. A good tool is the welcome bonus which is the bonus a player receive when he makes the first deposit. This can 100% or more and a set of free spins.
A casino can also offer a welcome package which consist of more welcome bonuses. This can be for the first 2,3,4 or 5 deposits.
The welcome bonus can be a percentage only or a combination of percentage bonus and free spins. The free spins can be received the same time or spread over a few days.
What are the rules for opening an account by more people in the same house?
This is not allowed and some casinos are very strict with this so look out. When you open more accounts or somebody with same IP address or address details the new account will be blocked? Why is that?
First of all online casinos don't want you to open a new account to claim the welcome bonus again. Secondly for some players Casinos pay a commission to affiliates when they make the first deposit so they need to close this account and cancel that commission.
If your partner in the same house also wants to open a casino account then you can try to contact customer support and ask if this is allowed. Sometimes they give you permission and you can play both at the same casino.